as I understand it if the epoxy can cure at a slightly elevated temperature it'll cure to a higher strength,,,then again some say it's a way to accellerate any "print-through" or telegraphing of weave before finishing that can occur later on. Mostly I just wanted the damn slow cure to hurry up so I can sand it this afternoon in the shade. I should probably revise the initial post,,I took the plastic off and turned the boat over,,it's getting too hot to touch.